import asyncio
import time

async def async_test(delay:int,content):
    await asyncio.sleep(delay)
    print(content)


#第一种：
async def main():
    await async_test(1,"lady")
    await async_test(2,"killer9")

#第二种
# async def main():
#     while True:
#         await async_test(1,"lady")
#         await async_test(2,"killer9")


if __name__ == '__main__':

    print(f"start at {time.strftime('%X')}")

    asyncio.run(main())

    print(f"end at {time.strftime('%X')}")